Screen wedge made out of black acrylic. Precision cut to perfect 90 degrees, ideal for mounting adjustable nozzles in screen vivarium tops (ie. chameleon enclosures). Protected by a peel-able adhesive label. 4 mounting holes drilled on the sides and one hole drilled in the middle for the misting assembly. Available for premium and value misting assemblies. See theInstallation Instructionsfor the wedge in a ZooMed vivarium screen top.